There is no additional documentation and there are no other references because there is no particular need for there to be.
If you are using the trap instructions then you know (or need to know) about the trap control block and that the trap instructions architecture requires you to provide information controlling the traps within the dispatchable unit control table (DUCT). This pointer (and the service behind it) was created so that individual trap exploiters would not code these updates themselves because they were more likely to get it wrong than z/OS development is and were more likely not to be in a position to react to architectural changes (such as happened when z/Architecture was introduced) than z/OS development is. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
